The galvanized steel grating has undergone hot-dip galvanized anti-corrosion treatment before leaving the factory, so how to measure the technical requirements of the galvanized steel grating?
1. The size of any galvanized grating is limited by the stress during paving, hanging and handling. The size of the removable auxiliary board also needs to take into account the weight limitations of manual handling.
2. The allowable deviation of the length of the galvanized grating is plus or minus 5 mm, and the allowable deviation of the width is plus or minus 5 mm.
3. The position deviation of the cross bar: the upper surface of the cross bar shall not exceed the upper surface of the load flat steel by 1.0mm: the two ends of the cross bar of the galvanized grid plate factory shall not exceed the outer ends of the flat steel on both sides of the steel grid plate by 3 mm.
4. The non-perpendicularity of the loaded flat steel shall not be greater than 10% of the width of the flat steel.
5. Longitudinal bending: The longitudinal bending deflection of galvanized grating shall not be greater than 1/200 of its length.
6. Crossbar deflection and spacing deviation: The deflection of the edge of the crossbar to the center of the steel grating shall not exceed 5 mm, and the allowable deviation of the distance between the crossbars at both ends is plus or minus 6 mm within a length of 1500 mm.
7. Diagonal line deviation: The relative deviation of the diagonal line of the galvanized grating due to dimensional tolerances shall not exceed plus or minus 5 mm.
8. Lateral bending: The transverse bending deflection (before wrapping) of the galvanized grating should be less than 1/100 of its width. Some steel grating products are used for a long time, but some steel gratings need to be replaced after a period of time. why is that? This is a problem related to the later maintenance of the steel grating after purchase.
How should the steel grating be maintained?
When the steel grating is maintained, some steel gratings are installed in chemical plants, sewage cleaning plants and other places. Corrosion in these places is very serious. Therefore, the galvanized layer of the steel grating should be protected during maintenance. Steel grating platform, that is, platform steel grating is a very useful steel grating product. This kind of steel grating has been applied in various industrial fields, and has strong surface impact resistance, especially the steel grating with a distance of 50 mm between cross bars has strong lateral impact resistance.
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